6 articles in this issue
Fabio Luiz Albarici,Ismae Foroughi,Marcelo Santos,Jorge Trabanco,Gabriel do Nascimento Guimarães
The physical heights definition of heights, proposed by Helmert in 1890 is one of the commonly used heights systems in practice. In Helmert’s definition, the mean value of gravity along plumbline is computed by simplifying the topography with a Bouguer sh... see more
Natalia Cristina Wiederkehr,Fábio Furlan Gama,João Roberto dos Santos,José Claudio Mura,Polyanna da Conceição Bispo,Edson Eyji Sano
This study aims to analyze the capability of the target decomposition techniques and the polarimetric ratios applied to the ALOS/PALSAR-2 satellite polarimetric images to discriminate the land use and land cover classes in the Tapajós National Forest regi... see more
Leandro Luis Silva de França,Alex de Lima Teodoro da Penha,João Alberto Batista de Carvalho
This paper presents a comparative study between the absolute and relative methods for altimetric positional accuracy of Digital Elevation Models (DEM). For the theoretical basis of this research, the definitions of accuracy (exactness) and precision, as w... see more
André Moiane,Alvaro Muriel Lima Machado
This paper investigates an alternative classification method that integrates class-based affinity propagation (CAP) clustering algorithm and maximum likelihood classifier (MLC) with the purpose of overcome the MLC limitations in the classification of high... see more
Paula Fernandez Costa,Irving da Silva Badolato,Rogério Luis Ribeiro Borba,Julia Celia Mercedes Strauch
This aim of this paper is the acquisition of geographic data from the Foursquare application, using data mining to perform exploratory and spatial analyses of the distribution of tourist attraction and their density distribution in Rio de Janeiro city. Th... see more
Andrea Santacruz Jaramillo,Silvio Rogerio Correia de Freitas,Roberto Teixeira Luz
Considering the efforts to establish Global Reference Systems linked to the geopotential space, new alternatives are sought to address the problems found in the classic national vertical networks. The Brazilian Vertical Reference Frame (BVRF) was material... see more